|
KMID : 1156220040300050395
|
|
Journal of Environmental Health Sciences
2004 Volume.30 No. 5 p.395 ~ p.401
|
|
|
A Study on the Model of Sulfidation Kinetics Using Seashell Wastes
|
|
Kim Young-Sik
|
|
|
Abstract
|
|
|
|
In this study, lots of methods have been studing to utilize energy and decrease contaminated effluents. There has been great progress on IGCC (Integrated gasification combined cycle) to reduce thermal energy losses. The following results have been conducted from desulfurization experiments using waste shell to remove H₂S. Unreacted core model for desulfurization rate prediction of sorbent was indicated. These were linear relationship between time and conversion. So co-current diffusion resistance was conducted reaction rate controlling step. The sulfidation rate is likely to be controlled primarily by countercurrent diffusion through the product layer of calcium sulfide(CaS) formed. Maximum desulfurization capacity was observed at 0.631 mm for lime, oyster and hard-shelled mussel. The kinetics of the sorption of H₂S by CaO is sensitive to the reaction temperature and particle size at 800℃, and the reaction rate of oyster was faster than the calcined limestone at 700℃.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|